The field investigation, conducted during 2022-23 (rabi season) in Randomized block design with 3 replications at Agricultural Research Farm of Baba Raghav Das Post-Graduate College, Deoria, UP to evaluate efficacy of botanical insecticides (i.e. neem leaf extracts @ 100 ml L–1, eucalyptus oil @ 25 ml L–1, lemongrass leaf extract @ 50 ml L–1, neem baan (azadirachtin 0.15 EC) @ 4 ml L–1, neem oil @ 5 ml L–1, and chinaberry seed extract @ 50 ml L–1) along with one chemical insecticide (spinotoram 11.7 per cent SC @ 0.25 ml L–1) over the Pusa-261 chickpea variety revealed that the insecticide spinotoram 11.7 per cent SC and the botanical neem oil was found superior against H. armigera in chickpea, respectively. Rest of the botanicals also showed significant effect over control. Maximum yield was recorded from the plots treated with spinotoram 11.7 per cent SC with grain yield of 0.28 Kg plot–1 followed by neem oil (0.26 Kg plot–1) as compared to the control (0.11 Kg plot–1).
Singh et al. (Tue,) studied this question.